Here is a Family Tree of the Imperial Family of Korea, courtesy of the ARMB.

Prince Gu (b 1931) is the Prince Lee Ku mentioned in the previous post who has just died (thank you Mandyy for the information).
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Prince Gu had a brother who was poisoned at the age of 8 months old, on May 20 1922 in Changdeok Palace, and died 3 days later. His parents, the Crown Prince and his Japanese wife, brought him to visit Korea the first time after their marriage in 1920. It's said palace servent put poison in baby prince's milk, to take a revenge for Emperor Gojong, who was poisoned to death by Japanese three years ago (in 1919).

Note Prince Wu died in 1945. Actually he was heavily burnt during the Hiroshima A-bomb attack, when he was riding a horse to his office. He died days later and his Japanese adjutant felt guilty and commited suicide (by hari kari).

Deepa Mehta set to film last Korean crown princess’ story
................According to Contactmusic, the focus of the Toronto based director’s film will be Julia Mullock, who met crown prince Lee Ku in New York City in the 1950s after Japanese colonisation and subsequent independence had removed the royal family from any official function in Korea..................http://www.newkerala.com/news4.php?a...lnews&id=10808

Korea's Last Princess Breaks Silence
Julia Mullock, Korea’s last princess, is 83 this year. Her right arm has been paralyzed for a decade and her finger joints are heavily deformed. But even though she can no longer move freely, she still vividly remembers the day she got married to Korea’s last imperial prince, aka citizen Yi Gu, 48 years ago...

Descendants of South Korea's former royal family proclaimed 88-year-old Princess Lee Hae-Won, seen here during the crowning ceremony, as the nation's new "queen" as they sought to restore the glory of a monarchy extinct for almost a century

Choson Royal Scions Crown New Korean MonarchSome descendants of the country's old royal family crowned a new monarch yesterday in a ceremony, although it had no state backing. A king ruled Korea before it was deprived of its diplomatic sovereignty in 1905 and made into a Japanese colony in 1910. The imperial family was not re-instituted in 1945 when Korea was liberated from Japan's colonial rule, and the country has since remained a parliamentary democracy without a monarch.http://times.hankooki.com/lpage/cult...2064611710.htm
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H.I.H. Princess Yi Haewon was born in Seoul in 1919. She is the daughter of the late H.I.H. Prince Yi Kang, Prince Ui and Yi Hu-chun, Lady Sudok-dang.
The headship of the Imperial House is now contested between the elderly princess and H.I.H. Prince Yi Won.
(Thank you for posting those pictures, fanletizia . Very interesting story.)

Well, I think that it's a case of descendants suddenly realising that they need a spokesperson and her being the best lady for the job. It does bring into the question the whole idea of what makes someone Royal.

More Controversy Over Korean Empress
On September 29, the 30th generation crowning ceremony was held for Lee Hae-won, a descendant of the royal family. The ceremony is faced with opposition from three royal family-related organizations: “organization for royal family,” “organization for restoring royal family,” and the “Jeonju Lee royal family organization.”

Right after the coronation ceremony, online café “organization for royal family” on the Internet portal site Daum was flooded with postings such as, “The royal family is drifting away from the public” and “Illegitimate crowning ceremony made the public dumbfounded.”.........http://english.donga.com/srv/service...=2006100396248